Exercise 4.23 Boxes A and B are in contact on a horizontal, frictionless surface (Figure 1). Box A has mass 23.0 kg and box B has mass 5.0 kg .A horizontal force of 180 N is exerted on box A. Figure 1 of 1

Consider a setup with a horizontal table, 2 masses, a string, and a massless frictionless pulley. Assume on the table m1= 1.8kg and hanging m2= 1.2kg. Also assume the coefficent of friction, uk = 0.20 on the table.  a) For each mass, identify the forces, draw a free body diagram, and set up equations for Newton's second law. You can also write an equation of the system.  b) Find the accleration after release.

Consider a thin slice of the first rod, of thickness dr, that is located a distance r from the origin and a thin slice of the second rod, of thicknessdo2, that is located a distance t2 from the origin. Enter an expression for the magnitude of the force dF12 that the thin slice of rod 1 exerts on the thin slice of rod 2, interms of L1, L2, Q1, Q2, *1, *2, and the Coulomb constant k.Write an equation for the total force on the slice dr of the second rod, due to the total charge on the first rod, in terms of the defined quantitiesCalculate the magnitude of the total force, in newtons, on the second rod due to the total charge on the first rod.

Consider the 65.0 kg Ice skater being pushed by two others shown In the figure. Frot F2 Free-body diagram F, F, F, (a) Find the direction (in degrees) and magnitude (in N) of F,et, the total force exerted on her by the others, glven that the magnitudes F, and F, are 25.2 N and 15.4 N, respectively. direction o (counterclockwise from the direction of F, is positive) magnitude (b) What is her initial acceleration (in m/s?) if she is initlally stationary and wearing steel-bladed skates that point in the direction of F? (c) What is her acceleration (in m/s2) assuming she is already moving in the direction of Fot? Remember that friction is always in the opposite direction of motion or attempted motion between surfaces in contact. m/s? (in the direction of Frot)

A box of mass m is resting in the flat bed of a truck which is stopped at a red light on a road which slopes upward at an angle qabove the horizontal. The coefficients of friction between the box and the truck bed are given by μs and μk.The light turns green and the truck begins to accelerate.Write all answers in terms of variables given in the problem and any appropriate constants. 1)Draw a free body diagram for the box. 2)Find the maximum acceleration amax of the truck such that the box remains in the exact same place in the truck without sliding. 3)Assume the truck accelerates at a rate greater than the maximum found in part b. (atruck> amax). From the perspective of someone sitting in theback of the truck with the box, the box will beginaccelerating toward the back of the truck. Express this acceleration abox in terms of m, the distance to the back of the truck L, and the kinetic energy K of the box just before it hits the back of the truck.

A student is trying to find the force on a person at the top of an inverted roller coaster, where the person is upside down at the top, and writes the equation S + mg = mv 2/r. What would you say about that?   A Yes, that’s correct.   B Close, but it should be written S - mg = mv2/r.   C Close, but it should be written mg - S = mv2/r.

s Getting Start x P Pearson Troubleshooter | Intera Course Home O Keyboard shortcuts for entering x openvellum.ecollege.com/course.html?courseld=1722133280penVellumHM 13343914c857458c3d89df2d7be78e70#10001 4 of 11 I Review | Constants Part A Find the magnitude F of the force that the wooden block exerts on the nail, assuming that this force is independent of the depth of penetration of the nail into the wood. You may also assume that vo > /2gL, so that the change in the hammer's gravitational potential energy, as it drives the nail into the block, is insignificant. Express the magnitude of the force in terms of M, vo, and L. • View Available Hint(s) x" Vx Vx X•10" F = V29L Ở Chrome Os System 1h Sign-in again Your Google Account(s) need attention Submit Previous Answers A O INTL I 10 26

Two blocks are connected by a massless, stretchless string. One of the blocks is on a horizontal frictionlesssurface. The string goes over a massless, frictionless pulley. The second mass simply hangs from the string. Between thefirst block and the pulley the string is parallel to the horizontal surface.a) Draw the free-body diagram for the first block (the one on the surface).b) Draw the free-body diagram for the second block (the hanging mass).c) Setup Newton’s second law for the first block.d) Setup Newton’s second law for the second block.e) Symbolically, what is the magnitude of m1’s acceleration?f) Symbolically, what is the magnitude of the tension in the string?Answer the following questions using the equation you derived in part (e) above.g) What is the magnitude of m1’s acceleration if m1 is 5.00 kg and m2 is 1.00 kg?h) What is the magnitude of m1’s acceleration if m1 is 1.00 kg and m2 is 5.00 kg?i) What is the magnitude of m1’s acceleration if m1 is 3.00 kg and m2 is 3.00…

An object of mass m is being acted by the following 3 forces: F1 = 500 N @ 45⸰ North of East, F2 = 750 N @ 30⸰ West of North and F3 = 400 N @ 30⸰ South of West.  Find mathematically the magnitude and direction of a fourth force F4 that will maintain the object at equilibrium.  Ignore the weight of the object. Provide free body diagram for the system and the sum of the forces along the axis.

Please help me to answer this. Answer only Number 7